RADIATED NOISE OF CAVITATING PROPELLERS
In this paper noise characteristics of three different propeller models are discussed. Each propeller displays a different type of cavitation, viz. tip vortex cavitation, bubble cavitation at mid-chord region of the propeller blades on suction side and sheet cavitation also on the suction side of the propeller blades. The propellers were tested at the same operating conditions behind a towed ship model. The investigation was performed to gain insight into a basic problem in propeller cavitation noise, i.e. , what is the acoustical behaviour of individual types of cavitation. It was found that the highest noise levels are produced by the propeller displaying bubble cavitation. The lowest noise levels were obtained with the propeller with stable tip vortex cavitation. The effects of nuclei and gas content of the water on cavitation have also been investigated. Both nuclei control and gas content appeared to be important.
- Noise and Fluids Eng, Presented at Winter Annual meeting of ASME, Atlanta, Georgia, Nov 27-Dec 2 1977.
American Society of Mechanical EngineersTwo Park Avenue
New York, NY USA 10016-5990
- Noordzij, L
- Van Oossanen, P
- Stuurman, A M
- Publication Date: 1977
- Pagination: n.p.
- TRT Terms: Cavitation (Mechanics); Cavitation erosion; Cavitation noise; Noise; Propellers; Sound transmission
- Old TRIS Terms: Cavitating propellers; Sound radiation
- Subject Areas: Environment; Marine Transportation; Vehicles and Equipment;
- Accession Number: 00182904
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: Proceeding
- Files: TRIS
- Created Date: Oct 31 1978 12:00AM